<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" src="js/test.js"></script>
    <!--<script type="text/javascript">
        alert("第一个JavaScript程序")
    </script>-->
</head>
<body>
   <a href="https://blog.csdn.net/weixin_35942997/article/details/82599390">程序员浏览器</a>
<a href="javascript:alert('程序员')">程序员</a>
<input type="button" onclick="alert('程序员');" value="程序员">
</body>
<!--<script type="text/javascript" src="js/test.js"></script>-->
</html>